膜科学与技术

新型PDMAA基准物用于超滤膜截留性能检测的研究

作者：郭春刚¹，潘献辉²，李浩¹，张建华³，徐旭¹，李雪梅¹，吕经烈¹

单位： 1.国家海洋局天津海水淡化与综合利用研究所，天津 300192;2. 国家海水及苦咸水利用产品质量监督检验中心，天津 300192;3.天津大学材料学院，天津 300072

关键词：基准物；超滤膜；截留性能；RAFT聚合

出版年,卷(期):页码： 2014,34(2):60-65

摘要：

采用可逆加成-断裂链转移聚合（RAFT聚合）技术，通过合成并使用具有双硫酯结构的化合物N-咔唑二硫代甲酸苄基酯（BCBD）RAFT试剂，以N,N-二甲基丙烯酰胺（DMAA）为单体，合成得到了 =9120，分子量分布窄（PDI<1.1），且链末端带发色团的聚合物PDMAA。PDMAA溶液在为0.1-2000 mg/L的浓度范围内，在波长为370 nm处的吸收强度与其浓度具有良好的线性关系。PDMAA作为基准物表征超滤膜的截留性能的研究结果表明，相对于PEG10000，PDMAA可以准确并且简易地表征超滤膜的截留性能，初步说明PDMAA作为基准物质的可行性，也表明RAFT活性聚合是制备性能优异超滤膜截留性能检测用基准物质的可行途径。

As Benzyl 9H-carbazole-9-carbodithioate(BCBD) was used as the RAFT reagent, Poly(N,N-Dimethyl Acrylamide)(PDMAA) with chromophore was synthesized by Reversible Addition-Fragmentation Chain Transfer (RAFT Polymerization) method. The average molecular weight of PDMAA is 9120 ( )with a low polydispersity(PDI<1.1). There is a good linear relationship between absorbance and the concentration of PDMAA when the concentration of PDMAA in the range of 0.1-2000mg/L at a wavelength of 370 nm. When the synthesized PDMAA was used to determining the retention performance of ultrafiltration membrane, the preliminary results showed the method was more simple and easy with a relative high degree of accurancy compare to the commercial PEG. It is also indicated the RAFT Polymerization is feasible way to develop novel standard substance.

第一作者简介：郭春刚 (1982- )，男，天津人，硕士，工程师，研究方向为聚合物分离膜材料制备、检测及应用，*通讯作者：郭春刚，电话：022-87898130，E-mail：guoguo19822002@qq.com。

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